Climate Comfort Score
64/100
Good
NOAA 1991–2020 normals 47°F annual avg Public-domain federal data
Spencer Muni, IA Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 47°F
- Avg annual temp
- 64/100
- Comfort score
- 26.8"
- Annual precip
- 153d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Spencer Muni
Spencer Muni, Iowa averages 47°F a year and scores 64/100 on the comfort index - good, milder than 51% of U.S. cities.
- 47°F
- annual average temperature (NOAA normal)
- 64/100
- comfort score, milder than 51% of U.S. cities
- 26.8"
- annual precipitation
- 153 days
- growing season, frost-free days
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
47°F (8°C)
Avg High
57°F
Avg Low
36°F
Annual Precip
26.8"
Comfort Score
64/100
Good
Avg Annual Temperature
47°F
30-year mean (NOAA NCEI)
Annual Precipitation
26.8"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Spencer Muni) 64.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Spencer Muni area.
How Spencer Muni compares to every U.S. city
Spencer Muni's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
64 Top 49% higher than 51% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Spencer Muni
MethodologyZooming out from Spencer Muni's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 26°F (-3°C) | 8°F (-13°C) | 17°F (-8°C) | 0.3" | 30.9 | 0.0 |
| February | 30°F (-1°C) | 13°F (-11°C) | 21°F (-6°C) | 0.4" | 27.0 | 0.0 |
| March | 44°F (6°C) | 25°F (-4°C) | 34°F (1°C) | 1.4" | 24.7 | 0.0 |
| April | 59°F (15°C) | 36°F (2°C) | 47°F (8°C) | 2.8" | 12.4 | 0.2 |
| May | 71°F (22°C) | 48°F (9°C) | 59°F (15°C) | 3.8" | 2.0 | 1.3 |
| June | 81°F (27°C) | 59°F (15°C) | 70°F (21°C) | 4.0" | 0.0 | 4.1 |
| July | 85°F (29°C) | 62°F (17°C) | 73°F (23°C) | 3.8" | 0.0 | 7.1 |
| August | 82°F (28°C) | 59°F (15°C) | 71°F (21°C) | 3.3" | 0.0 | 3.4 |
| September | 76°F (24°C) | 50°F (10°C) | 63°F (17°C) | 3.2" | 1.4 | 2.3 |
| October | 61°F (16°C) | 37°F (3°C) | 49°F (10°C) | 2.2" | 11.4 | 0.2 |
| November | 45°F (7°C) | 25°F (-4°C) | 35°F (1°C) | 1.1" | 23.6 | 0.0 |
| December | 31°F (-1°C) | 14°F (-10°C) | 22°F (-5°C) | 0.4" | 30.0 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 0.3"
4.3 days with precipitation
February 0.4"
4.3 days with precipitation
March 1.4"
6.4 days with precipitation
April 2.8"
10.0 days with precipitation
May 3.8"
12.9 days with precipitation
June 4.0"
12.0 days with precipitation
July 3.8"
9.1 days with precipitation
August 3.3"
10.9 days with precipitation
September 3.2"
9.4 days with precipitation
October 2.2"
8.2 days with precipitation
November 1.1"
5.1 days with precipitation
December 0.4"
4.6 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 2
50% probability date
Last Spring Freeze
May 2
50% probability date
Growing Season
153 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,353
Higher = more heating needed
Cooling Degree Days
774
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Spencer Muni's climate means for you
Spencer Muni runs 47°F a year - peaking in July, coldest in January.
- Gardeners get about 153 frost-free days, with the last spring freeze near May 2 - plan the planting calendar around it, not the regional average.
- Energy bills track 7,353 heating and 774 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Spencer Muni, IA
In Spencer Muni, Iowa, the NOAA 1991–2020 climate normals put the annual average temperature at 47°F, ranging from a mean daily high of 57°F to a mean daily low of 36°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USW00014972, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Spencer Muni receives roughly 26.8 inches of precipitation each year, predominantly as rainfall. The frost-free season averages 153 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 2 and the first fall freeze near October 2. For energy use, 7,353 heating degree days and 774 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Spencer Muni scores 64/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, July-driven heat peaks in summer, and January-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.
Frequently Asked Questions
What is the average temperature in Spencer Muni, IA? ▼
The average annual temperature in Spencer Muni, Iowa is 47°F. The warmest month averages 85°F (29°C) and the coldest averages 8°F (-13°C).
How much rain does Spencer Muni get? ▼
Spencer Muni receives 26.8 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Spencer Muni? ▼
Spencer Muni has a climate comfort score of 64/100 (Good), milder than 51% of U.S. cities in the PlainClimate database.
When is the growing season in Spencer Muni? ▼
Spencer Muni has approximately 153 frost-free days per year, with the last spring freeze around May 2 and the first fall freeze around October 2.
How much energy does heating and cooling require in Spencer Muni? ▼
Spencer Muni has 7,353 heating degree days and 774 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Spencer Muni climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00014972 near Spencer Muni.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00014972. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.